JPH1078610A - Data imprinting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data imprinting device where an expensive film encoder for deciding imprinting timing is disused and the degree of freedom concerning an imprinting position is increased, and which can be used without restricting the imprinting of desired data and the range thereof. SOLUTION: The device 10 imprinting the data on the surface of film by a light emitting element while the film travels is provided with a film winding mechanism 34 including a motor for feeding, a feeding control means 11 winding the film by one frame by controlling a feeding mechanism after finishing exposing operation, a pulse signal output means 35 outputting a pulse signal with the rotation of the motor, a perforation detection part 60 detecting perforation and outputting a perforation signal, a perforation counter counting the number of the pulse signals until the 2nd perforation signal is outputted continuously after the 1st perforation signal is outputted, and a decision means deciding the light emitting interval of imprinting operation this time based on a counted value at the time of winding the film by one frame previous time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data imprinting apparatus mounted on, for example, a camera for imprinting data such as date when a film is wound.

[0002]

2. Description of the Related Art An apparatus for optically recording the date and time when a photograph is taken on a film surface has been proposed, for example, in Japanese Patent Application No. 5-253136. In this conventional apparatus, a pulse signal is generated in accordance with the rotation of a film feed motor, and the pulse signal is generated based on how many pulses are generated per perforation immediately before starting to print data. It is configured to determine the imprint timing.

[0003]

However, in the case of the above-mentioned conventional apparatus, the film must be fed by at least one perforation in order to determine the printing timing. For this reason, depending on the arrangement of the photographic frames and the perforations on the film, there may be a problem that the position where desired data is to be imprinted in the photographic frames and the imprint range are limited. In other words, there is a drawback that data relating to imprinting of each photographic frame from, for example, a position near the frame end cannot be recorded.

Therefore, an object of the present invention is to eliminate the need for an expensive film encoder or the like for determining the transfer timing, increase the degree of freedom regarding the transfer position, and without limiting the transfer position and range of desired data. An object of the present invention is to provide a usable data imprinting device.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has taken the following means to solve the problem and achieve the object. That is,
Based on the number of pulse signals (hereinafter, referred to as a motor PI signal) detected with the rotation of the drive system motor generated during one perforation of the frame immediately before the photographed frame (hereinafter, referred to as a previous frame), A printing interval of a frame (hereinafter, referred to as a next frame) is determined, and a printing operation of desired data is performed.

More specifically, the present invention relates to a data imprinting device for imprinting desired data on a film surface by emitting light of a predetermined light emitting element while the film is running, and [1] a film feeding mechanism including a film feeding motor. And a feed control means for controlling the film feed mechanism to wind up the film by one frame after completion of a predetermined exposure operation, and a motor for outputting a pulse signal with rotation of the film feed motor. A pulse signal output means, a perforation detection means for detecting a perforation provided on the film, and outputting a perforation signal corresponding thereto, and from when a specific perforation signal is issued until the next perforation signal is issued Counting means for counting the number of the motor pulse signals during the period of Deciding means for deciding a light emission interval related to the imprinting operation at the time of winding up one frame, which is `` to be performed this time '', based on the value counted by the counting means at the time of winding up the previous frame. A data imprinting device is provided. [2] Similarly, a film feeding mechanism including a film feeding motor, a feeding control means for controlling the film feeding mechanism to feed the film, and a substantial film when feeding the film. Data comprising speed detecting means for detecting a moving speed, and determining means for determining a light emission interval related to a "current" imprinting operation based on the film moving speed detected at the time of "previous" film feeding. An imprinting device is provided. [3] Similarly, a feed control unit that includes a film feed motor, feeds the film by driving the film feed motor, and controls the light emitting element with the rotation of the film feed motor. Signal output means for outputting a light emission timing signal; and speed detection means for detecting a substantial film movement speed during feeding of the film, wherein the signal output means is a film movement speed detected in the past. A data imprinting apparatus further comprising means for adjusting the interval of the light emission timing signal in the “current” imprinting operation based on

[0007]

FIG. 1 is a block diagram of a data imprinting apparatus as one embodiment according to the present invention. In this data imprinting apparatus, a main microcomputer (hereinafter referred to as a main microcomputer) 11
The main microcomputer 11 includes a display circuit 12, a release switch 13, a setting switch 14, a film sensitivity reading circuit 15, a photometric processing circuit 1, and the like.
6, storage circuit 17, date display circuit 18, distance measuring circuit 19,
The exposure circuit 20, the film control circuit 21, and the lens control circuit 22 are connected via a bus. The main microcomputer 11 is connected to an oscillator 23 that generates an operation clock of the main microcomputer and a date microcomputer (hereinafter, referred to as a D microcomputer) 24.

The display circuit 12 displays the operation mode of the camera, exposure data, the number of frames to be photographed, and the like. The release switch 13 performs a distance measurement operation by an ON operation (that is, pressing down) of the first-stage switch (1st release SW), and further performs an exposure operation by an ON operation of a second-stage switch (2nd release SW). It is a two-stroke switch where the action is taken. The decision switch 14 is a switch for setting the operation mode of the camera. Also, the film sensitivity reading circuit 15
Is a circuit for reading the DX code of the film and sending an SV value signal to the main microcomputer 11. The storage circuit 17 is a non-volatile memory for storing data such as the number of frames of the film and the operation mode of the camera that need to be stored even when the power is off. Date display circuit 1
Numeral 8 is for displaying date data based on data from the D microcomputer 24.

The distance measuring circuit 19 is a circuit for supplying data necessary for measuring the distance to the subject to the main microcomputer 11. The exposure circuit 20 controls an appropriate exposure operation of the light image from the lens 25 by a lens shutter 26 having an aperture and a shutter function based on a control signal of the main microcomputer 11. The film control circuit 21 drives and controls the film winding mechanism 34 based on a control signal from the main microcomputer 11 to perform automatic winding of the film 27 and the like. The film winding operation detecting unit 35 includes a feeding motor (not shown in FIG. 2) included in the film winding mechanism 34.
Pulse signal corresponding to the rotation of the main microcomputer 11
To be supplied to The details will be described later.

The main microcomputer 11 performs automatic winding based on the pulse signal, and sends the date imprint timing to the D microcomputer 24 as a PTM signal. The perforation detecting section 60 detects the perforation of the film 27 and inputs a detection signal to the main microcomputer 11. The lens control circuit 22 drives the photographing lens 28 based on a control signal of the main microcomputer 11 to form a subject image on the film 27. The D microcomputer 24 is a dedicated microcomputer for imprinting date data on the film 27. The D microcomputer 24 uses the 7-segment LED 28 and the imprinting lens 29 to convert date data based on the control signal of the main microcomputer 11. It is imprinted on the upper predetermined position. Note that the above 7
The segment LED 28 and the imprinting lens 29 are arranged near the film wind-up mechanism 34 so that imprinting can be performed from the front end of the frame on each film frame. The imprinting operation is performed in synchronization with the imprinting timing signal from the main microcomputer 11 and the PTM.

The oscillator 30 constantly transmits the operation clock of the D microcomputer 24. Therefore, by clocking this clock, the D microcomputer 24 obtains the "year"
The imprint data of "hour" and "minute" is created. Switch 3
Reference numerals 1 to 33 denote a mode (MOD) switch, a selector (SEL) switch, and an adjust (ADJ) switch, respectively. By operating these three switches, the photographer can select a desired imprint mode and correct imprint data. Further, the selected state and the corrected state of the imprinting mode are displayed on the date display circuit 18, and the three switches 31 to 3 are checked while confirming this display.
Operate 3 The transmission and reception of signals between the main microcomputer 11 and the D microcomputer 24 are performed using CLK, CEN, S
This is performed via various signal lines of CLK and SDATA.

FIG. 2 shows a specific structure of the main film winding mechanism 34 and the film winding operation detecting unit 35 in the data imprinting apparatus shown in FIG.
It is shown. The spool 36 is connected to a feed motor 38 via a gear train 37 meshing therewith, and is rotated by the rotating film winding spool 36.
7 is wound up. The feed motor 38 is driven and controlled by the film control circuit 21 described above.

The feed motor 38 is provided with a PI blade 42 having holes at a constant pitch in the circumferential direction on the opposite side of the gear train 37 on the opposite side from the gears of the gear train 37. An infrared LED 39 is provided above the PI blade 42, and a phototransistor 40 is disposed at a position facing the infrared LED 39 with the PI blade 42 interposed therebetween, and the presence or absence of a hole in the PI blade 42 is detected as rotation of the motor. It is formed as a photo interrupter (PI).

The film control circuit 2 is connected to the feed motor 38.
When the drive signal is transmitted from 1, the feed motor 38 rotates its drive shaft to rotate the spool 36 via the gear train 37 to perform a film winding operation, and also rotates this PI blade 42. This PI blade 4
Numeral 2 transmits or blocks the infrared light emitted from the infrared LED 39 to the phototransistor 40 by rotating. By this action, the phototransistor 40 is turned ON / OFF.
OFF, the ON / OFF waveform is converted to a waveform shaping circuit 41.
Tell

The waveform shaping circuit 41 shapes the waveform into a rectangular wave and transmits it to the main microcomputer 11 as a pulse signal (ie, a motor PI signal) corresponding to the movement of the spool 36. The number of the motor PI signal is counted by a first counter (not shown) in the main microcomputer 11. This counter is an independent counter that performs a count operation regardless of a programmed operation if the main microcomputer 11 permits the count operation.

FIGS. 3A and 3B show a detailed configuration of the perforation detecting section 60. FIG. FIG. 3 (a)
Photoreflector (hereinafter, referred to as PR) 61 which is a sensor for detecting perforation 62 and film 27
FIG. 14 is a diagram showing a positional relationship between the PR61 and PR61.
In order to detect the perforation 62 of the film 27 fed in the axial direction, the film 27 is provided at a position shown in the drawing opposite to the perforation line at one end of the film.

FIG. 3B shows a cross section of the film along the dashed line XX 'in FIG. 3A and a detailed circuit diagram of the perforation detecting section 60 shown in FIG. . In the cross section of the film in the figure, the window portion not shaded is a perforation 62 through which light passes, and when the infrared light emitting diode 61a emits light toward the film 27,
Infrared light also passes through this window.

The PR 61 is an infrared light emitting diode 61
a, and the phototransistor 61b. When this infrared light is reflected by the hatched film 27, the reflected light is received by the phototransistor 61b. The phototransistor 61b is turned on by this light reception.
On the other hand, if the perforation 62 of the film is located where the infrared light is projected, the infrared light is not reflected, and the phototransistor 61b is turned off. The ON / OFF signal of the phototransistor 61b (hereinafter, referred to as a perforated signal) accompanying the feeding operation of the film 27 is shaped as shown by a waveform shaping circuit 63 at the subsequent stage and sent to the main microcomputer 11. .

(Function and Effect 1) A feature of the data imprinting apparatus of the present invention having such a configuration is that a 7-segment LED is first used while the exposure operation is completed and one frame is wound up.
By causing 28 to emit light in synchronization with the motor PI signal, a plurality of characters or symbols represented by date data are recorded on the film 27. However, this motor PI signal must be divided because the resolution is too high as the imprint timing signal, and the number of occurrences when one frame is wound decreases as the last frame is approached (this phenomenon occurs). Is considered to be because the winding spool 36 becomes thick and the feeding speed of the film 27 is increased as a result).

Therefore, in the data imprinting apparatus of the present invention, how much the feed motor 38 has been rotated to feed a predetermined amount of film in the "previous" film feeding operation is detected and stored. A feature is that the device is devised to determine the “current” data imprinting interval based on the stored information. Therefore, specifically,
In this data imprinting apparatus, when performing the one-frame winding operation, the motor PI signal generated between the detection of a specific perforation and the detection of the next perforation is counted and stored. In the imprinting operation for the next photographing frame, the above-described light emitting operation is performed when a number of motor PI signals corresponding to a value obtained by dividing the stored counter value by a predetermined value is generated. I have.

In order to change the expression in the above description,
In this data imprinting apparatus, the moving speed is detected and stored during the feeding of the film 27, and the light emission interval in the “current” imprinting operation is adjusted based on the moving speed. In other words, a feature of the present invention is to adjust the interval of the light emission timing signal in the “current” imprinting operation based on the moving speed of the film detected in the past (for example, immediately before the imprinting of data is started). There is one.

Next, FIG. 4 is a flowchart showing the operation at the time of winding up one frame as a subroutine "winding up one frame". In the table shown in FIG. 5, the roles of various registers and counters used in the flowchart of FIG. 4 are described in a list format. When this "single frame winding" routine is called in a main routine of a camera sequence (not shown), processing is performed in the following order.

First, the value of the register LPI is set to "8".
And store it in the register TIM (S1). Here, the contents of this register LPI are the motor P generated between two perforations during the "previous" one-frame winding.
This is the number of I signals. In this data imprinting device, since imprinting is performed eight times between adjacent perforations, the motor PI signal generated while two perforations are detected in the previous one-frame winding operation is detected. By dividing the number by "8", it is possible to know how many times the motor PI signal should be counted to perform the imprinting operation.

Next, the PI counter and the perfor counter are reset (that is, cleared to 0) (S2,
S3). Then, the infrared LEDs 39 and 61a are turned on (S4), and after the motor PI signal and the perforated signal can be detected, the feeding motor 38 is turned on to start film feeding (S5).

Subsequently, the value of the PI counter is compared with the value of the TIM (S6), and if they are not equal, the flow proceeds to step S9. On the other hand, if they are equal (that is, when the imprint point is reached), the PI counter is reset (S7),
A TM signal (that is, a light emission signal) is transmitted to the D microcomputer 24 (S8). The D microcomputer 24 receives this signal and causes the 7-segment LED 28 to emit light for a predetermined time.

By the way, when the motor PI signal and the perfor signal are generated in accordance with the film feeding, the PI counter and the perfor counter which are hard counters execute the counting operation irrespective of the operation order of the main microcomputer 11. . Therefore, when performing the comparison as in step S6, the latest count value can be obtained only by performing the process of reading the value of the corresponding counter.

Next, it is determined whether or not the perforation counter has become "7" in step S9 (S9). If this counter is not "7", it is determined that "the film feeding has not reached the final stage", and the flow branches to step S10 to determine whether or not the printing of all the prepared data has been completed. Is determined (S10). If the printing has been completed, the process returns to step S9. If the printing has not been completed, the process returns to step S6, and the same processing steps S6 to S8 are repeated.

On the other hand, if it is determined in step S9 that the value of the perfor counter has reached "7", the PI counter is reset in the next step S11 (S11). The standby loop for waiting for the value to become "8" is repeated (S12). When the perfor counter reaches "8", it means that the feeding of one frame of film has been completed, so the contents of the PI counter are put into the LPI (S13), and the feeding motor 38 is turned off.
The value is set to FF (S14), and the process returns.

(Function and Effect 2) As described above, in the present embodiment, the number of motor PI signals generated until the value of the perforation counter becomes "8" determines the "next" printing timing. It uses the fact that it is the count value used at the time. In the present invention, the main reason why the above-described counting operation is performed until the last perforation is detected as much as possible is that it is more preferable to measure at a point near the next (ie, next) photographing frame as much as possible. This is because the control accuracy is improved.

(Modifications) In addition to the embodiment described above, the following modifications can be made. In the illustrated embodiment, the control is performed so that the motor PI signal generated while two adjacent perforations move is counted. However, in order to further improve the accuracy, the perforation interval is increased to three or more. You may.

Further, in the present embodiment, the "previous"
Since the “current” light emission timing is determined by the count value, the first photographed frame of the film (that is,
With respect to (frame), no count data exists. Therefore, in order to solve this state at the beginning of the film feeding, the same counting operation as described above may be performed at the final stage of the idle feeding operation after the film is loaded. In the first frame, so-called "thickening" of the take-up spool hardly occurs, so that the count data may be initialized to an appropriate predetermined value.

A means (not shown) for measuring the actual moving time of the film from the number of film perforations detected within a predetermined time or the time required to detect a predetermined number of perforations. May be provided, and the “current” light emission timing may be determined based on the film moving speed in the “previous” one-frame winding operation. In this case, the motor PI signal described above is not required. Further, the motor PI
The frequency division ratio of the motor PI signal may be calculated by comparing the signal generation period with the above-described perforation signal generation period. (Other Modifications) Various modifications can be made without departing from the spirit of the present invention.

As described above, the present invention includes the following inventions. [1] A data imprinting device for imprinting desired data on a film surface by emitting light of a predetermined light emitting element while the film is running, the film feeding mechanism including a film feeding motor, and a predetermined exposure operation After the end of, the film feed mechanism to control the film feeding mechanism to wind up the film by one frame, a motor pulse signal output means for outputting a pulse signal with the rotation of the film feeding motor, Perforation detection means for detecting perforation provided on the film and outputting a perforation signal corresponding thereto, and the motor pulse during a period from when a specific perforation signal is issued to when a next perforation signal is issued. Counting means for counting the number of signals, and one-frame winding "last time" in film feeding Data deciding means for deciding a light emission interval related to a photographic operation at the time of winding up of one frame "to be performed this time" based on the value counted by the counting means at the time of raising. Device. [2] A data imprinting device for imprinting desired data on a film surface by emitting light of a predetermined light emitting element while the film is running, the film feeding mechanism including a film feeding motor; Feed control means for controlling the mechanism to feed the film, speed detection means for detecting a substantial film moving speed when feeding the film, and the speed detection means for detecting the `` previous '' film feed. Determining means for determining a light emission interval related to the “current” imprinting operation based on the film moving speed. [3] A data imprinting device for imprinting desired data on the film surface by emitting light of a predetermined light emitting element while the film is running, including a film feeding motor, and driving the film feeding motor. Feed control means for feeding the film, signal output means for outputting a light emission timing signal of the light emitting element with the rotation of the film feed motor, and a substantial film when feeding the film. Speed detecting means for detecting a moving speed, wherein the signal output means adjusts the interval of the light emission timing signal in the “current” imprinting operation based on the film moving speed detected in the past. A data imprinting device further comprising means.

In addition, the following inventions are also included. (1) A data imprinting device for imprinting desired data on the film surface by emitting light from a light emitting element arranged to face the film surface when winding up a photographed film by a predetermined film feeding motor. Wherein the data imprinting device performs data imprinting based on information on how much the film feed motor has rotated to feed a predetermined amount of the film in a "past" film winding operation. A data imprinting device controlled to determine an interval. (2) The data imprinting apparatus according to [1], wherein the "previous" one-frame winding is a past time when data is imprinted on an exposed frame of the film. (3) The winding of one frame "to be performed this time" is the current point in time when data is to be printed on the exposed frame of the film. Data imprinting device.

[0035]

According to the data imprinting apparatus of the present invention, an expensive film encoder for determining the imprint timing is not required. Further, the degree of freedom regarding the imprinting position is increased, so that the imprinting position of desired data and its range can be used without being restricted.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a camera including a data imprinting apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an outline of a configuration of a film winding mechanism and a film winding operation detecting unit in the data imprinting apparatus of FIG. 1;

FIGS. 3A and 3B show a detailed configuration of a perforation detection unit, wherein FIG. 3A is a perspective view showing a positional relationship between a photoreflector serving as a perforation detection sensor and a film, and FIG. FIG. 3 is a cross-sectional view taken along a dashed line XX ′ and a detailed configuration diagram of a perforation detection unit.

FIG. 4 is a flowchart showing a subroutine “one piece winding up”;

FIG. 5 is a list showing roles of various registers and counters used in the flowchart of FIG. 4;

[Explanation of symbols]

REFERENCE SIGNS LIST 1 ... imprint data range (date), 10 ... data imprinting device, 11 ... main microcomputer (for main control), 12 ... display circuit, 13 ... release switch, 14 ... setting switch, 17 ... storage circuit, 18 ... Date display circuit, 21 ... Film control circuit, 22 ... Lens control circuit, 23 ... Oscillator (for main microcomputer), 24 ... D microcomputer (for date), 27 ... Film, 28 ... 7 segment LED, 29 ... Copy Embedded lens, 30 ... oscillator (for D microcomputer), 31-33 ... switch, 34 ... film winding mechanism, 35 ... film winding operation detecting section, 36 ... film winding spool, 38 ... feeding motor, 39 ... infrared LED Reference numeral 60 denotes a perforation detection unit 61 reference photoreflector (PR) 62 reference perforation 63 reference waveform shaping circuit S1 to S14: Processing steps of a subroutine "one frame winding".

Claims (3)

[Claims] 1. A data imprinting device for imprinting desired data on a film surface by emitting light of a predetermined light emitting element while the film is running, comprising: a film feeding mechanism including a film feeding motor; After the end of the exposure operation, a feeding control means for controlling the film feeding mechanism to wind up the film by one frame, and a motor pulse signal output means for outputting a pulse signal in accordance with the rotation of the film feeding motor. And perforation detection means for detecting a perforation provided on the film and outputting a corresponding perforation signal, and a period from when a specific perforation signal is issued until a next perforation signal is issued. Counting means for counting the number of motor pulse signals; and Data deciding means for deciding a light emission interval related to a photographic operation at the time of one frame winding to be performed this time based on a value counted by the counting means at the time of one frame winding. Device. 2. A data imprinting device for imprinting desired data on a film surface by emitting light of a predetermined light emitting element while the film is running, comprising: a film feeding mechanism including a film feeding motor; Feeding control means for controlling the feeding mechanism to feed the film; speed detecting means for detecting a substantial film moving speed when feeding the film; and detecting the speed at the time of the previous film feeding. Determining means for determining a light emission interval related to the current imprinting operation based on the film moving speed. 3. A data imprinting device for imprinting desired data on a film surface by emitting light of a predetermined light emitting element while the film is running, comprising a film feeding motor, and driving the film feeding motor. Feed control means for feeding the film by doing, signal output means for outputting a light emission timing signal of the light emitting element with the rotation of the film feed motor, substantially when feeding the film, Speed detecting means for detecting a film moving speed, wherein the signal output means adjusts an interval of the light emission timing signal in a current imprinting operation based on the film moving speed detected in the past. A data imprinting device further comprising means.